Add snippet 392 to website

Author: fedejeanne

swt/snippets/index.html

@@ -793,6 +793,7 @@ <h1>SWT Snippets</h1>
 						<li> <a href="https://github.com/eclipse-platform/eclipse.platform.swt/tree/master/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet254.java">compute the number of visible rows in a tree</a> &ndash; <a title="Preview for Snippet 254" href="https://github.com/eclipse-platform/eclipse.platform.swt/blob/master/examples/org.eclipse.swt.snippets/previews/Snippet254.png">(preview)</a></li>
 						<li> <a href="https://github.com/eclipse-platform/eclipse.platform.swt/tree/master/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet312.java">show a menu in a tree header</a> &ndash; <a title="Preview for Snippet 312" href="https://github.com/eclipse-platform/eclipse.platform.swt/blob/master/examples/org.eclipse.swt.snippets/previews/Snippet312.png">(preview)</a></li>
 						<li> <a href="https://github.com/eclipse-platform/eclipse.platform.swt/tree/master/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet358.java">determine which TreeItems are visible in a Tree's viewport</a> &ndash; <a title="Preview for Snippet 358" href="https://github.com/eclipse-platform/eclipse.platform.swt/blob/master/examples/org.eclipse.swt.snippets/previews/Snippet358.png">(preview)</a></li>
+						<li> <a href="https://github.com/eclipse-platform/eclipse.platform.swt/tree/master/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet392.java">insert an image in the 2nd column of a Tree</a> &ndash; <a title="Preview for Snippet 392" href="https://github.com/eclipse-platform/eclipse.platform.swt/blob/master/examples/org.eclipse.swt.snippets/previews/Snippet392.png">(preview)</a></li>
 						<!-- <li> <a href="https://github.com/eclipse-platform/eclipse.platform.swt/tree/master/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet240.java">text that spans multiple columns</a></li> -->
 					</ul>
 					<p></p>
@@ -818,7 +819,7 @@ <h1>SWT Snippets</h1>
 	</main>
 
 	<script>
-		generate();	
+		generate();
 	</script>
 </body>